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SubjectRe: pre12 VM doubts and patch
On Wed, Sep 19, 2001 at 11:15:47PM -0700, Linus Torvalds wrote:
> and do early COW (which the write-access kind of means).

my new patch does the early COW.

> However, your patch isn't right for another reason: if we do delete it
> from the swap cache, we'd better mark it dirty so that it gets
> re-allocated a swap entry if it later on needs it.
> That's why the old code went to such extremes: it marked it dirty and
> writable if it was a write access (and exclusive), and it marked it _just_
> dirty and removed it from the swap cache if it went over the swap limit.


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